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Model A1225 / Mid 2007 and Early 2008 / 2.4, 2.8, or 3.06 GHz Core 2 Duo processor

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Gray screen, incomplete boot

This unit does incomplete boot, its working in Safe mode, but not in normal booting.

According to Apple tech support, possible problem are memory, hard drive, logic board replace hard drive. I did replaced accordingly, one by one, but no luck.

The last thing I did was replacing the logic board assuming this the end of the problem, however, the problem remain the same. just let you know that OS installation was complete and restart automatically, however booting failed, didn’t go to login screen, the screen remains gray, and no sound or chime. The diagnostic LED’s lit accordingly.

I don’t know what else to do. Needing help to resolve the problem.

Update (11/22/2018)

see the screen on my mac

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Beantwoord! Bekijk het antwoord Dit probleem heb ik ook

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If it boots in Safe Mode, disregard everything the Genius told you. Your problem is in the system extensions. On this old of a machine, I would insert my installation DVD start up by holding down the C key. Reformat the drive using Disk Utility (better would be to wipe the drive drive with a single pass write zeros option to map out any bad blocks). Now format the drive GUID and Mac OS X extended Journaled. Now install your original system.

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After I did follow your iinstructions, everything goes well on the following, formatting GUID and Mac OS X HD extended Journaled, installation from DVD Mac os lion. After installation, should restart by it self, few minutes waiting on booting Apple logo appear, minute later hwile booting, blueis screen appear then after less than a minute, white screen appear with distorted small squared gray color accross the screen, no login screen showed up,

I did shutdown and start with safe mode, the unit run in safemode.

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You wiped the drive and reformatted. It will boot fine in Safe Mode but not a standard boot? You have a graphic card GPU issue.

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If I have graphic issue, What should I do? Do I need to replace graphic or video card? If yes, were get

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I'd like to see if will show up with an external monitor.

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What do you mean with an external monitor, can tell me what to do with external monitor?

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I have a similar problem. iMac shows a gray screen with an apple logo. In safe mode it loads, but there are artifacts on the display.

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